/*
  This file is part of 'Trivial chess'.

  'Trivial chess' is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  'Trivial chess' is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with 'Trivial chess'.  If not, see <http://www.gnu.org/licenses/>.
*/

/* SVN FILE: $Id$ */
/**
 * @author         $Author$
 * @version        $Rev$
 * @lastrevision   $Date$
 * @filesource     $URL$
 */

#ifndef FILESCALARABSTRACT_H_
#define FILESCALARABSTRACT_H_


template<class File, typename Int>
class FileScalarAbstract {
public:
	template<class Scalar>
	friend File operator+(const File file, const Scalar scalar) {
		const Int ret = file.toInt() + scalar.toInt();
		if ( ret >= 0 && ret < 8 )
			return File(file.toInt() + scalar.toInt());
		else
			return File::NIL();
	}

	template<class Scalar>
	friend File operator+=(File& file, const Scalar scalar) {
		file = file + scalar;
		return File(file);
	}
};

#endif /* FILESCALARABSTRACT_H_ */
